This is topic Highest timing in 93'? in forum Tech Talk at Northern California Ford Owners  .


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Posted by 93NotchbackLX (Member # 12122) on :
 
Whats the best place to have my timing set in my 93' notchback>? it's at 12-12.5 right now. Im looking to get the most out of my engine
 

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Posted by LXjames (Member # 10791) on :
 
12 is good but try 14 but don't use crappy gas you will need to go up in octane
 

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Posted by rollin5ive0 (Member # 8592) on :
 
u gotta see what the car likes while one fares good at 12 another likes 13 and another maybe more/less gotta feel it out, and yeah higher octane, or you might start knockin and pingin!
 

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Posted by 93NotchbackLX (Member # 12122) on :
 
nice guys ill try it out, what exactly does advancing the timing due that gives me more power?
 

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Posted by rollin5ive0 (Member # 8592) on :
 

quote:

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Originally posted by 93NotchbackLX:
nice guys ill try it out, what exactly does advancing the timing due that gives me more power?

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quote:

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Originally posted by racsirx:
I couldn't see running low octane with advanced timing on a stock Foxbody, but my all stock 95 with stock timing will ping like crazy if I don't run 91, I like to maximize timing when racing and I couldn't see doing that without race gas. 20 years ago I think we were setting the initial timing 18-22 degrees with 100-110 octane to get a stock Mustang in the 12s but I could be wrong since it was a long time ago but it was something like that. But on a basic 500hp +/- blower car, Foxbody, I couldn't see going over 110 octane with 24-26 total timing, and a turbo car, Foxbody 500HP+/-, 117 octane works very well with 24-26 total timing.

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quote:

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Originally posted by SteveL:

quote:

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Originally posted by racsirx:

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It's easier to see if you're improving while on a dyno. To get the maximum power, you want the maximum explosion from the air/fuel mix burning just after TDC. Higher octane burns slower so you need to advance the timing to get that max explosion with the piston in the right position (just after TDC). Lower octane burns faster so the spark can start later and still make the same and possibly more torque. You'll get more power (torque) when the max explosion (really called peak cylinder pressure) when the piston is near the top of the cylinder and just on its' way down.

If the engine pings, it doesn't automatically mean you need higher octane. You may have the spark too far advanced. Advance the timing too much and the peak explosion occurs right at or a little before TDC which will ping.

My point is higher octane and advanced timing by themselves does not make more power. You really need to try different combinations to see what works best in your motor.

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coupla quotes for ya from what i believe is correct info, your not gonna get an incredible amount of power out of adv. timing on an other wise stock fox. but i hope the quotes above help u understand what exactly is going on and how to use it. like i said every car is dif so your gonna have to feel out whats really workin! good luck!
 

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Posted by MaK_1967v8 (Member # 12187) on :
 

quote:

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Originally posted by 93NotchbackLX:
nice guys ill try it out, what exactly does advancing the timing due that gives me more power?

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